Finding the Fourth Proportional to 115,863.48, 159,877.98 and 64,879.08
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Solution
The fourth proportional to 115,863.48, 159,877.98 and 64,879.08 is: 89,525.50
Step by Step Solution
- Step 1: Write the proportion equation
115,863.48 : 159,877.98 = 64,879.08 : x - Step 2: Convert to fraction form
115,863.48/159,877.98 = 64,879.08/x - Step 3: Cross multiply
115,863.48x = 159,877.98 × 64,879.08 - Step 4: Simplify right side
115,863.48x = 10,372,736,254.66 - Step 5: Solve for x
x = 10,372,736,254.66/115,863.48 - Step 6: Final answer
x = 89,525.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.